中深层地源热泵供暖系统运行策略优化分析

Optimization analysis of operation strategy of medium and deep ground source heat pump heating system

本文以河北省邯郸市某中深层地源热泵供暖系统为工程案例,首先采用分段方法建立了闭式U型井换热器的传热解析模型,并通过实际监测数据对该模型进行了有效性验证,并结合热泵模型,循环水泵模型以及板式换热器模型构建了整个中深层地源热泵供暖系统的仿真模型。应用该模型,探讨了在不同负荷需求下不同循环流量组合对系统运行效率的影响,得到了中深层地源热泵供暖系统长期运行时的最优运行策略。

Taking a medium and deep ground source heat pump heating system in Handan City,Hebei Province as an engineering case,firstly,the heat transfer analytical model of closed u-well heat exchanger is established by using the subsection method,and the effectiveness of the model is verified by the actual monitoring data.Combined with the heat pump model,circulating water pump model and plate heat exchanger model,the simulation model of the whole medium and deep ground source heat pump heating system is constructed.Using this model,the influence of different circulating flow combinations on the system operation efficiency under different load demand is discussed,and the optimal strategy of medium and deep ground source heat pump heating system for long-term operation is obtained.